59 lines
1.6 KiB
C
59 lines
1.6 KiB
C
/*
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* Copyright (C) 2011 OMICRON electronics GmbH
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*
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* based on drivers/mtd/nand/nand_spl_load.c
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*
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* Copyright (C) 2011
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* Heiko Schocher, DENX Software Engineering, hs@denx.de.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <spi_flash.h>
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/*
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* The main entry for SPI booting. It's necessary that SDRAM is already
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* configured and available since this code loads the main U-Boot image
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* from SPI into SDRAM and starts it from there.
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*/
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void spi_boot(void)
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{
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struct spi_flash *flash;
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void (*uboot)(void) __noreturn;
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/*
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* Load U-Boot image from SPI flash into RAM
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*/
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flash = spi_flash_probe(CONFIG_SPL_SPI_BUS, CONFIG_SPL_SPI_CS,
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CONFIG_SF_DEFAULT_SPEED, SPI_MODE_3);
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if (!flash) {
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puts("failed.\n");
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hang();
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}
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spi_flash_read(flash, CONFIG_SYS_SPI_U_BOOT_OFFS,
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CONFIG_SYS_SPI_U_BOOT_SIZE,
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(void *) CONFIG_SYS_TEXT_BASE);
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/*
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* Jump to U-Boot image
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*/
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uboot = (void *) CONFIG_SYS_TEXT_BASE;
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(*uboot)();
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}
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